Car truck



Aug. a, 1926. I 594,646

. H. D. TAYLOR CAR TRUCK Filed Jan. 15, 1912s Patented firing; '3, i

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one TRUCK- p T 'Q Application d January The invention relatesfto cart-racks and more particularly to that type of-carvtruck set forth in prior applications 1 for patent filed by me in the United. States: Patent Office May 16, 1924, Serial. Nos. 713,675 and 713,676. and in which the supporting means for the truck bolst r andbolstersprings are journaled in enlarged, cylindrical bearing openings in. the central portions of the: side frames and are interlocked therewith to permit the relative rocking movement of the side frames in vertical planes asthe truck passes over irregularities in thetrack. v As set forth in the above noted pr1or applications, the truck side frames, are formed of; cast orpressed steel and the bolster car rlers, which are preferably 1n the form of) rings, one journaled injthe enlarged central bearing opening of each side frame are preferably formed ofcast steel. The present invention seeksto provide improved means for maintaining the steel bolster carrier and side frame out of contact and whichwill, Wllilk out necessitating expensive careful maehim ing of the parts, facilitate the rocking movement of the side frames so that the truck wheels will follow irregularities of thetrack even at high speeds. T othis endpthe invene tion provides a thin liner strip for theenlarged central bearing-opening of the truck side frame which is formed of hard, rolled,

non-ferrous sheet metal andpreferably of athin strip of rolled, spring brass, all.;as hereinafter set forth, illustrated in the preferredform in the accompanying drawing, and more particularly pointed out in the V appended claims.

In the drawings: A

i Fig. 1 is a plan view of one side of the car truck to which the present improvement is applied, part beingshown in horizontal sections r Fig. 2 is a side elevation with parts shown in vertical section.

Figure 3 is a verticalcross sectiononthe line 33 of Fig. 2.

Fig. 4, is a perspective View of the imr proved liner strip. g r

Fig. 5 is a detail view in section on line 5-5 of Fig. 1.

Fig. 6 is a side elevation of a portion of the side frame illustrating amodified form of the bolster carrier.

the

The truck side frames may be formed of pressed or cast steel. That illustrated is similar to the truck side frame shown and 1 5 1926. Serial No.'81,380,

[ teeters described in theabove noted prior appli cation, Serial No. 713,676 and comprises re-- Yersely aij'ched com pression. and tension members afand 7) having horizontal extensions at their ends which areriveted together to form arm s c tliat rest np'on the journal boxes (Z. ,Ver ical plate sections eexten'd betw en the re, tral portions of tho compi e I ,n memhers and are provided ted cdge 10: riveted to sncofniei inbers and witn on ilaropenings d finedby out-i rned flangeeh form is hear ng 4 I mesforxtliebolster .rabl5, as most clearly indiig. 3, thetwo plate sections e of lcated in r each side frame are spacedjaparh, In the. preferredconstruction shown, the flange 11 of the lnner section 0 is provldedw th pro? ecsthe ends of the truck bolster g and spring 1' plank h. Theend'ofjth e spring plankrests upon a suitable sill or j-seat 15formed at the I lower end of the bolster opening Tofthe carmen and has a depending stud which engages a socket 16 inthe sill to detachablvinterlock the spring'plank and carrier ring." At the SldGS'Of its openlng thelcarrler r ng 1s provided with-guide lugs 17 so arranged that V the end of the truck bolster oan'be, inserted into the enlarged lower portion of the open: mg of the 02111181' ring and .then, ra sed. to

bringlngs 18 thereon, into interlocking relation with the guide lugs lr', the bolster being supported as usnal in raised position by.

springs interposed between its 'endsand the ends of the springrplank. .iThe carrier'ring to which the ends of thelbolster and spring plank are thus detachably.interlockedpis interlocked with thev side frame to permit; the relative rocking movement of the latter by means of keys lc positioned between and bolted to the plate sections e and engaging. elongated openings or slots 19 in the sides of the carrier ring.

The carrier ring instead of having a journal fit in the bearing opening of the side.

frame, as setfortlr in the prior applications referred to, is slightly smaller than the bearing opening and is held out of cont-act with the side frame by a thin liner strip m for the bearing opening which is formed of a strip of rolled, hard, non-ferrous meta l,

and preferably of spring brass. Preferably,

the diameter of the steel carrier ring ising opening in the side frame it will tend,

to spring outwardly into snug engagement with the walls of the opening; and it is of such length that when so disposed its free ends areclosely adjacent. The liner is formed at its sides with slots 20 through which. the keys extend, these slots being only slightly longer than the width of the keys so that the latter hold the liner in position and prevent excessive relative movement between it andtlie side frame. Preferably, as shown, the liner is positioned with its free ends at the top of the bearing opening.

Such a thin, rolled liner strip for the bearing opening requires no machining and its use also avoids the necessity of carefully machining the bearing surfaces of the side frame and carrier ring. Furthermore, as it is formed of rolled, hard, nonferrous metal or springsheet brass, it is extremely durable and it is found to greatly facilitate the rocking movements of the side frames. In other words, the improvement provides cheap, efficient means for insuring the propor engagementv of the wheels .ofthe truck with the track despite irregularities therein, and even at high speeds. Furthermore, the liner strip bridges the gapfbetween the spacing sect-ions or plates 6, and when employed the opening of the bolster carrier may, if desired, be opened atthe top. Such a, modified bolster carrier f"'is shown in Fig. 6.

It is also noted that thet'present'improvement can be employed to advantage in con.- nection with the cast metal side frame such as shown in the prior application, Serial No. 713,675.

Obviously, changes may be made in the details set forth Without departure from the scope of the appended claims.

I claimv as my invention:

1. A steel car truck comprisingv side frames having enlarged central bearing openings, bolster supporting means journaledin said openings, and liners formed of enlarged: central bearing opening, a steel carrier having a bolster opening journaled inthe bearing opening of the side frame. and a liner for the bearing opening formed of non-ferrous, hard metal, substantially as described.

4. In combination, a steel car truck sideframe, a steel bolster carrier journaled in the side frame and a rolled, spring sheet metal, liner-strip interposed between the side frame and carrier.

5. In combination, a steel cartruck sideframe, a one-piece, steel bolster-carrier journaled in the side-frame, 'a hard, non-ferrous, sheet-metal liner-strip interposed between the side frame and carrier, and key moans detachably interlocking said parts in a manner' permitting the relative rocking movement of the side frame and carrier, substantially as described. 6; In combination, a steel, car-truck sideframe having an enlarged, central-portion provided with a cylindrical bearing opening, a liner'for the opening formed of hard, non-ferrous sheetimetal, a U-shaped, steel, bolster carrier journaled in said opening. and meanszdetachably interlocking said parts in amanner permitting the relative oscillationof the side frame and carrier, substantially as described.

7.111 combination, a pressed-steel, cartruck side-frame comprising compression and tension members and a central section formed of spaced vertical plates having outer and inner out-turned flanges, the latter forming a central bearing opening, aliner of hard, non-ferrous metal within said opening and'bri'dging the space between said plates, and a bolster-carrier journaled in said opening, substantially as described.

HOWARD D. TAYLOR.- 

